Somewhere within us all lives a rock beast waiting to break free. Those looking to uncage the animal inside themselves have a wide range of new options in the digital age, and one of the highest rated options out there for the iPhone and iPad is now free for a limited time.

Guitar Lessons: Rock Prodigy by music software maker The Way of H is a nifty app for iOS devices that turns learning how to play the guitar into something of a game. Unlike most rival products, however, the app is interactive — it listens to you play and provides feedback to help.
From the app’s description:

If you have a new guitar, or one that’s sitting in the closet collecting dust… if you thought you’d never have the time or patience, Rock Prodigy is perfect for you. Rock Prodigy gets you playing in minutes, listens to you, and lets you know what to learn, practice and play each time you pick up your guitar.
Unlike boring books, gimmicky games, or random tips and tricks, Rock Prodigy’s patented method combines lessons, exercises, challenges, riffs, songs, videos, photos, diagrams, descriptions, and more all in a personalized learning path that tracks your progress.
Welcome to Rock Prodigy. Welcome to your new life with guitar!
Course 1 is an effective way for beginners to dive right in. It’s fun, sometimes challenging, but always awesome. You’ll be playing guitar sooner than you think.

Guitar Lessons: Rock Prodigy is typically a $50 purchase, and anyone who has ever taken a private guitar lesson will tell you that price isn’t bad at all. For a limited time, however, the app is completely free in the App Store.